Home / 78,053.60-117,127.10-33,680.35

Finding the Fourth Proportional to 78,053.60, 117,127.10 and 33,680.35

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Solution

The fourth proportional to 78,053.60, 117,127.10 and 33,680.35 is: 50,540.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,053.60 : 117,127.10 = 33,680.35 : x
  2. Step 2: Convert to fraction form
    78,053.60/117,127.10 = 33,680.35/x
  3. Step 3: Cross multiply
    78,053.60x = 117,127.10 × 33,680.35
  4. Step 4: Simplify right side
    78,053.60x = 3,944,881,136.85
  5. Step 5: Solve for x
    x = 3,944,881,136.85/78,053.60
  6. Step 6: Final answer
    x = 50,540.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.